Enabling 802.1X Authentication - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 49 Configuring 802.1X Port-Based Authentication
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Enabling 802.1X Authentication

To enable 802.1X port-based authentication, you first must enable 802.1X globally on your switch, then enable AAA and
specify the authentication method list. A method list describes the sequence and authentication methods that must be queried
to authenticate a user.
The software uses the first method listed in the method list to authenticate users; if that method fails to respond, the software
selects the next authentication method in the list. This process continues until there is successful communication with a listed
authentication method or until all defined methods are exhausted. If authentication fails at any point in this cycle, the
authentication process stops, and no other authentication methods are attempted.
To allow VLAN assignment, you must enable AAA authorization to configure the switch for all
Note
network-related service requests.
To configure 802.1X port-based authentication, perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)#
dot1x system-auth-control
Step 3
Switch(config)# aaa new-model
Step 4
Switch(config)# aaa authentication
{ }
dot1x default
Step 5
Switch(config)# aaa authorization
network {default} group radius
Step 6
Switch(config)# interface
interface-id
Step 7
Switch(config-if)# switchport mode
access
Purpose
Enters global configuration mode.
Enables 802.1X on your switch.
To disable 802.1X globally on the switch, use the
no dot1x system-auth-control command.
Enables AAA.
To disable AAA, use the no aaa new-model command.
Creates an 802.1X AAA authentication method list.
[ ...]
method1 method2
To create a default list that is used when a named list is not specified in
the authentication command, use the default keyword followed by the
methods that are to be used in default situations. The default method list
is automatically applied to all interfaces.
Enter at least one of these keywords:
•
•
To disable 802.1X AAA authentication, use the
no aaa authentication dot1x {default | list-name} method1 [method2...]
global configuration command.
(Optional) Configures the switch for user RADIUS authorization for all
network-related service requests, such as VLAN assignment.
Enters interface configuration mode and specifies the interface to be
enabled for 802.1X authentication.
Specifies a nontrunking, nontagged single VLAN Layer 2 interface.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
group radius—Use the list of all RADIUS servers for authentication.
none—Use no authentication. The client is automatically
authenticated by the switch without using the information supplied by
the client.
Configuring 802.1X Port-Based Authentication
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